CN212182453U - Positive plate of phosphate system lithium ion power battery - Google Patents
Positive plate of phosphate system lithium ion power battery Download PDFInfo
- Publication number
- CN212182453U CN212182453U CN202021389949.2U CN202021389949U CN212182453U CN 212182453 U CN212182453 U CN 212182453U CN 202021389949 U CN202021389949 U CN 202021389949U CN 212182453 U CN212182453 U CN 212182453U
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- CN
- China
- Prior art keywords
- strip
- positive
- shaped grooves
- mirror surface
- blunt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 19
- 229910019142 PO4 Inorganic materials 0.000 title claims abstract description 15
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 title claims abstract description 15
- 239000010452 phosphate Substances 0.000 title claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 238000007581 slurry coating method Methods 0.000 claims abstract description 9
- 239000006256 anode slurry Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 12
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052744 lithium Inorganic materials 0.000 abstract description 9
- 239000002002 slurry Substances 0.000 abstract description 7
- 239000011267 electrode slurry Substances 0.000 description 7
- 239000011149 active material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 102100023170 Nuclear receptor subfamily 1 group D member 1 Human genes 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model relates to the technical field of lithium battery pole pieces, in particular to a phosphate system lithium ion power battery positive plate, which comprises a positive current collector and a lug connected with the positive current collector, wherein the positive current collector comprises a mirror surface and a blunt surface, the mirror surface and the blunt surface are both provided with positive slurry coating areas, two positive slurry coating areas are both provided with strip-shaped grooves, the positive slurry coating areas are also coated with positive slurry, the strip-shaped grooves on one side of the mirror surface are distributed on the mirror surface of the positive current collector in an array manner, the strip-shaped grooves on one side of the blunt surface are distributed on the blunt surface of the positive current collector in an array manner, the strip-shaped grooves on the mirror surface and the strip-shaped grooves on the blunt surface are arranged in a staggered manner in a vertical plane, and the strip-shaped grooves and the round grooves arranged on the mirror surface and the blunt surface effectively increase the coating area of the positive slurry under the condition that the overall structure of the positive current, the coating amount of the anode slurry on the anode slurry coating area is improved, and the electric energy capacity of the battery is further increased.
Description
Technical Field
The utility model relates to a lithium-ion battery pole piece technical field, in particular to phosphate system lithium ion power battery positive plate.
Background
With the rapid development of lithium batteries in recent years, current collectors for lithium batteries are rapidly developed, common positive electrode materials of the lithium ion batteries comprise lithium manganate, lithium cobaltate, lithium iron phosphate, ternary materials and the like, common negative electrode materials comprise carbon materials, silicon-based materials and the like, the ion batteries can be subjected to secondary charging in the use process, and the lithium ion batteries belong to secondary rechargeable batteries. The lithium battery of the phosphate system has good cycle performance and thermal stability in the aspects of charging and discharging, has strong safety guarantee in the use process, is green and environment-friendly, cannot cause serious damage to the environment, is low in price, and is considered as the best material for producing large-scale battery modules by the battery industry. However, the positive plate of the lithium battery of the phosphate system at the present stage is limited in volume and the amount of the coated positive slurry is limited, so that the electric quantity which can be stored in the general lithium battery is low, the capacity of the electric energy which is to be improved needs to be realized by various other processing technologies, and the effect is not very obvious.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a phosphate system lithium ion power battery positive plate to solve its positive plate of lithium cell of the phosphate system of present stage that proposes in the above-mentioned background art because the restriction of volume, coated positive slurry volume is limited, makes the lower problem of the electric quantity that can save of general lithium cell inside.
In order to achieve the above object, the utility model provides a following technical scheme: including the anodal mass flow body, with the utmost point ear that the anodal mass flow body is connected, the anodal mass flow body includes mirror surface and blunt face, all be provided with anodal thick liquids coating area on mirror surface and the blunt face, two anodal thick liquids coating area on all be provided with the bar recess, anodal thick liquids coating area goes up still to coat has anodal thick liquids.
Preferably, the strip-shaped grooves on one side of the mirror surface are distributed on the mirror surface of the positive electrode current collector in an array manner.
Preferably, the strip-shaped grooves on the side of the blunt surface are distributed on the blunt surface of the positive electrode current collector in an array.
Preferably, the strip-shaped grooves on the mirror surface and the strip-shaped grooves on the blunt surface are staggered in a vertical plane.
Preferably, a circular groove is formed in the positive electrode slurry coating area on the outer side of the strip-shaped groove, and positive electrode slurry is coated on the inner surface of the circular groove.
Preferably, the circular grooves are uniformly arranged at the outer sides of the strip-shaped grooves.
The utility model discloses a technological effect and advantage:
the strip-shaped groove and the circular groove which are arranged on the mirror surface and the blunt surface effectively increase the coating area of the anode slurry under the condition of not changing the overall structure of the anode current collector, improve the coating amount of the anode slurry on the anode slurry coating area, and further increase the electric energy capacity of the battery.
Drawings
Fig. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a top view of the structure of the present invention.
Fig. 3 is a schematic structural diagram of one side of the structural mirror surface of the present invention.
Fig. 4 is a schematic structural view of the blunt surface side of the present invention.
In the figure: 1. a tab; 2. a positive current collector; 3. a mirror surface; 4. a blunt surface; 5. a positive electrode slurry coating region; 6. a strip-shaped groove; 7. a circular groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a phosphate system lithium ion power battery positive plate as shown in fig. 1-4, including the anodal mass flow body 2, with the utmost point ear 1 that the anodal mass flow body 2 is connected, the anodal mass flow body 2 includes mirror surface 3 and blunt face 4, all is provided with anodal thick liquids coating district 5 on mirror surface 3 and the blunt face 4, all is provided with bar recess 6 on two anodal thick liquids coating district 5, and the anodal thick liquids coating district 5 goes up still to have the anodal thick liquids to coat.
The main function of the fluid is to collect the current generated by the battery active material so as to form a larger current for external output, the positive current collector 2 not only plays a role of bearing the active material, but also collects the electrons generated by the electrochemical reaction to be conducted to an external circuit, the battery active material in the technical scheme is positive slurry, the positive slurry is coated on the surface of the positive current collector 2, and the current collector of the positive current collector 2 is in full contact with the active material.
As shown in fig. 1 and 2, the strip-shaped grooves 6 on one side of the mirror surface 3 are distributed on the mirror surface 3 of the positive current collector 2 in an array manner, the strip-shaped grooves 6 on one side of the blunt surface 4 are distributed on the blunt surface 4 of the positive current collector 2 in an array manner, the strip-shaped grooves 6 on the mirror surface 3 and the strip-shaped grooves 6 on the blunt surface 4 are arranged in a staggered manner in the vertical plane, and the coating area of the positive slurry is increased due to the concave surfaces of the strip-shaped grooves 6.
As shown in fig. 3 and 4, a circular groove 7 is formed in the positive electrode slurry coating area 5 outside the strip-shaped groove 6, the positive electrode slurry is coated on the inner surface of the circular groove 7, the circular groove 7 is uniformly formed outside the strip-shaped groove 6, and the coating area of the positive electrode slurry is further increased by the arrangement of the circular groove 7.
When an external electric field is applied for charging, for example, lithium iron phosphate is used as positive electrode slurry, internal lithium ions are separated out to become charged lithium ions, and the lithium ions move from the positive electrode to the negative electrode.
Therefore, the coating area of the anode slurry is greatly increased by the arrangement of the strip-shaped groove 6 and the circular groove 7, and the quantity of movable lithium ions is also greatly increased in the charging and discharging process, so that the battery has more electric quantity.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (6)
1. The utility model provides a phosphate system lithium ion power battery positive plate which characterized in that: including anodal mass flow body (2), with utmost point ear (1) that anodal mass flow body (2) are connected, anodal mass flow body (2) include mirror surface (3) and blunt face (4), all be provided with anodal thick liquids coating district (5) on mirror surface (3) and blunt face (4), two anodal thick liquids coating district (5) on all be provided with bar recess (6), anodal thick liquids coating district (5) on still the coating have anodal thick liquids.
2. The positive plate of a phosphate system lithium ion power battery according to claim 1, wherein: the strip-shaped grooves (6) on one side of the mirror surface (3) are distributed on the mirror surface (3) of the positive current collector (2) in an array mode.
3. The positive plate of a phosphate system lithium ion power battery according to claim 2, wherein: the strip-shaped grooves (6) on one side of the blunt surface (4) are distributed on the blunt surface (4) of the positive current collector (2) in an array manner.
4. The positive plate of a phosphate system lithium ion power battery according to claim 3, wherein: the strip-shaped grooves (6) on the mirror surface (3) and the strip-shaped grooves (6) on the blunt surface (4) are arranged in a staggered mode in a vertical plane.
5. The positive plate of a phosphate system lithium ion power battery according to claim 1, wherein: the anode slurry coating area (5) on the outer side of the strip-shaped groove (6) is provided with a circular groove (7), and the inner surface of the circular groove (7) is coated with anode slurry.
6. The positive plate of a phosphate system lithium ion power battery according to claim 5, wherein: the circular grooves (7) are uniformly arranged on the outer sides of the strip-shaped grooves (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021389949.2U CN212182453U (en) | 2020-07-15 | 2020-07-15 | Positive plate of phosphate system lithium ion power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021389949.2U CN212182453U (en) | 2020-07-15 | 2020-07-15 | Positive plate of phosphate system lithium ion power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212182453U true CN212182453U (en) | 2020-12-18 |
Family
ID=73762272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021389949.2U Expired - Fee Related CN212182453U (en) | 2020-07-15 | 2020-07-15 | Positive plate of phosphate system lithium ion power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212182453U (en) |
-
2020
- 2020-07-15 CN CN202021389949.2U patent/CN212182453U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |